Improvement in safe-locks



' UNITED STATES PATENT OFFICE.

CHARLES LE DUE, OF BOSTON, MASSACHUSETTS.

imPRovEMENT IN SAFE-LOCKS.

Specification forming part of Letters Patent No. 33,652, dated November5, 1861.

To all whom it nul/y concern:

Be it known that I, CHARLES LE DUE, of the city of Boston, State ofMassachusetts,

, have invented new and useful Improvements in Safe-Locks, whichv I callthe Secret Safe- Lock, and I do hereby declare that the following is afull and exact description thereof, reference being had to theaccompanying drawings, and to the letters ot' reference marked thereon,making a part ot` this specitication.

The nature of myinvention consists in the shape and arrangement of twoslides operating parallel with two bolts, the slides having flanged endsand operated by independent or loose pins at one end, which pins areoperated by the key.

To enable others skilled in the art to make and use my invention, I willproceed to describe its operation and construction.

A represents the safe, and B the door; C, the circular key-hole at sideof safe, having an ordinary spring and shield D to cover the key-hole.The key can be inserted and used in the door atthe side ot safe tooperate on the lock.

E represents the two bolts having projections F at their ends, by whichthe bolts are drawn backward (by the slides G) against the spring' H,and again forced to their places by the spring H. The slides G have alsoprojections or flanges I at their ends, which press against theprojections F and operate the bolts E, when the slides are forced backby the independent pins J, which Work in a pipe or cylinder K. The frontends of slides G have inclined plane or beveled points L, against whichthe independent pins J rest.

M represents the key, which has two Wards N and is attached to a handlein the center and operates on a pivot P. The one end of key has a curvedpoint, and this point is used to press back the shield D of the key-holeC. The key enters straight until it is pressed forward with itscurved-point. front against the projecting pin Q, when the key operateson its pivotP and is forced at right. angles (with its handle) by thepin Q.L The key is then drawn outward until the wards N fit over theindependent pins J, and the pins press against the inclined plane pointsL of the slides G, when the slides G are moved back and move the bolts Eback by the projections E and I until the slides G come in contact withthe stationary guards or pins R. This unlocks the door in front; butwhen the door is to be unlocked at the side of safe the key is thrust inthe key-hole C until it comes in contact with the stationary pin S, whenit receives its angular shape, and is then to be drawn outward until itis brought in Contact with the projections F on the ends of bolts E, andthe bolts E are thus drawn back until the Wards N come in contact withthe stationary pins R. The bolts are then drawn and the door isunlocked.

T represent cross braces or clips in which the bolts and slides operateand are, held fast in their proper places to the door B.

IVhat I claim as my invention, and desire to secure by Letters Patent.is y The construction, arrangement, and combination of the bolts E andslides G, with their anged and inclined plane ends to be operated by thepins J, substantially as described.

CHARLES LE DUE.

Vitnesses:

J. FRANKLIN REIGART, JOHN S. HoLLINGsHEAD.

